Neshev, DragomirKrolikowski, WieslawOstrovskaya, ElenaKivshar, Yuri2015-12-132015-12-130146-9592http://hdl.handle.net/1885/87150We study experimentally nonlinear localization effects in optically induced gratings created by interfering plane waves in a photorefractive crystal. We demonstrate the generation of spatial bright solitons similar to those observed in arrays of coupled optical waveguides. We also create pairs of out-of-phase solitons, which resemble twisted localized states in nonlinear lattices.Keywords: Crystals; Optical waveguides; Photorefractive materials; Solitons; Nonlinear localization; Nonlinear optics20032015-12-12